Introducing ADDAC803 Quadraphonic Spatializer
Introducing ADDAC803 Quadraphonic Spatializer
I'm starting to get more and more into some serious EAM, Concrete etc. and this module looks like the next logical step, Quadra more or less being the standard for electronic compositions since Stockhausen.
I'm eagerly awaiting it and I was wondering if anyone has any idea of how the development is going.
I'm eagerly awaiting it and I was wondering if anyone has any idea of how the development is going.
♪...He thought he waaas the cream of the crop; buuut he Bleeped, when he should've Blopped.
All the cats, gathered around, to see what he was trying to prove; but anyone could plainly see that he was dragging them out of the groove♫
All the cats, gathered around, to see what he was trying to prove; but anyone could plainly see that he was dragging them out of the groove♫
Hello,
Although the module development is completely finished and the reactions to this module were very positive i had very few inquires for it and never took the step to make a first batch!
i'm still offering the "beta user" discount for this one,
so if a few people step in i'll get it rolling!
all the very best
andre
Although the module development is completely finished and the reactions to this module were very positive i had very few inquires for it and never took the step to make a first batch!
i'm still offering the "beta user" discount for this one,
so if a few people step in i'll get it rolling!
all the very best
andre
Sure, I'm interested. Do you have any specs and what not? Right now I'm waiting for a bigger case but if the only way the module will see the light of day is to join the beta, then that's what I'll do.
♪...He thought he waaas the cream of the crop; buuut he Bleeped, when he should've Blopped.
All the cats, gathered around, to see what he was trying to prove; but anyone could plainly see that he was dragging them out of the groove♫
All the cats, gathered around, to see what he was trying to prove; but anyone could plainly see that he was dragging them out of the groove♫
- cyklopljud
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Hello!
About ADDAC803 specs:
This is a hybrid module where all the algorithm is running on a digital MCU while all the audio path is fully analog.
4 High quality VCA's are used to route the necessary audio amplitude to each of the channels independently, meaning that each VCA CV input is connected to the digital side being controlled by the algorithm.
The algorithm is based on the VBPA concept (Vector Based Amplitude Panning) this is the most common algorithm behind most digital spatialization techniques applied to 4 fixed position outputs (speakers).
googling this will show many sources of info, here's a detailed academic paper:
http://lib.tkk.fi/Diss/2001/isbn9512255324/article1.pdf
Features:
Polar and cartesian modes.
double stereo to be used as a double panner.
4 CV outputs with the algorithm outputs. These are buffers of the same CVs that are used to control the VCA's. 0 to +5v
2 CV outputs with X & Y position or radius & angle, 0 to +5v
depending on the polar or cartesian setting, if polar these 2 CV's will output the cartesian values and vice-versa.
So they work as polar to cartesian converter and vice-versa:
2 extra CV outputs, titled "Filter" + & - , normal and inverted to be used for series filtering or reverb addition depending on the defined position ( ex. the further the sound source is from the center: the more reverb would to be applied; or lowers a lowpass filter frequency) This increases the perception of a distant sound.
hope this helps!
any other particular question?
all the very best
andre
an updated from panel below:

About ADDAC803 specs:
This is a hybrid module where all the algorithm is running on a digital MCU while all the audio path is fully analog.
4 High quality VCA's are used to route the necessary audio amplitude to each of the channels independently, meaning that each VCA CV input is connected to the digital side being controlled by the algorithm.
The algorithm is based on the VBPA concept (Vector Based Amplitude Panning) this is the most common algorithm behind most digital spatialization techniques applied to 4 fixed position outputs (speakers).
googling this will show many sources of info, here's a detailed academic paper:
http://lib.tkk.fi/Diss/2001/isbn9512255324/article1.pdf
Features:
Polar and cartesian modes.
double stereo to be used as a double panner.
4 CV outputs with the algorithm outputs. These are buffers of the same CVs that are used to control the VCA's. 0 to +5v
2 CV outputs with X & Y position or radius & angle, 0 to +5v
depending on the polar or cartesian setting, if polar these 2 CV's will output the cartesian values and vice-versa.
So they work as polar to cartesian converter and vice-versa:
2 extra CV outputs, titled "Filter" + & - , normal and inverted to be used for series filtering or reverb addition depending on the defined position ( ex. the further the sound source is from the center: the more reverb would to be applied; or lowers a lowpass filter frequency) This increases the perception of a distant sound.
hope this helps!
any other particular question?
all the very best
andre
an updated from panel below:

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I have been pondering on the same vain myself; what use does a quad panning have if not as a stepping stone to acquiring a four speaker setup?
Thankfully it doubles up as a duo stereo panner as well.
Have you any idea of the workings of some of the weirder aspects of the module? I am referring to the settings/cv outs/ filter outs. To be honest, their use eludes me.
On the other hand, I have been fighting my ignorance in regards of the use of a typical stereo console in a quad speaker system. Let me know if you (or anyone else for that matter) is interested in discussing this subject further, as it surely will come in handy.
Thankfully it doubles up as a duo stereo panner as well.
Have you any idea of the workings of some of the weirder aspects of the module? I am referring to the settings/cv outs/ filter outs. To be honest, their use eludes me.
On the other hand, I have been fighting my ignorance in regards of the use of a typical stereo console in a quad speaker system. Let me know if you (or anyone else for that matter) is interested in discussing this subject further, as it surely will come in handy.
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I'll get one to replace my VCAmatrix.
I'll abuse it for FX routing (these filter +/- outs sold me) and it's nice to have in case i should ever get a chance to rock on a quadrophonic system...
Cheers,
Björn
I'll abuse it for FX routing (these filter +/- outs sold me) and it's nice to have in case i should ever get a chance to rock on a quadrophonic system...
Cheers,
Björn
Gonzophone: 6U monosynth https://www.modulargrid.net/e/racks/view/156366
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Hello all,
Some news about the ADDAC803,
Glad to tell that the 1st prototype is up and running!
hoping that in 4-6 weeks the first pre-orders will be finished!
http://addacsystem.com/product/addac800 ... patializer
all the very best
andre
Some news about the ADDAC803,
Glad to tell that the 1st prototype is up and running!
hoping that in 4-6 weeks the first pre-orders will be finished!
http://addacsystem.com/product/addac800 ... patializer
all the very best
andre



Another beauty for my audio mixing skiff

BJ
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Check the fourth post from the top by Andre. He explains a few things.Noha wrote:I've worked with spatialized sound in MAX/MSP and this module is very exciting! However I can't tell what some of the outputs are used for. How are CV Outs 1-4, X/Y CV Outs and Filter +- used? Is there a manual or a description anywhere? I can't find it on the website link.
PS: is that your photo in your avatar?
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ah yes! just the info I was looking for, thanks. my glasses must have obscured the view. this module looks excellent, I now desire one immensely. are you aware of what CVs the Filter +- output? It says they are "extra." Are they tied to the room size or X/Y? It still seems unclear.
and yes, the avatar photo is a self portrait
and yes, the avatar photo is a self portrait

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2 extra CV outputs, titled "Filter" + & - , normal and inverted to be used for series filtering or reverb addition depending on the defined position ( ex. the further the sound source is from the center: the more reverb would to be applied; or lowers a lowpass filter frequency) This increases the perception of a distant sound.Noha wrote:ah yes! just the info I was looking for, thanks. my glasses must have obscured the view. this module looks excellent, I now desire one immensely. are you aware of what CVs the Filter +- output? It says they are "extra." Are they tied to the room size or X/Y? It still seems unclear.
I'd guess they're tied to both the position and the room size. But that probably depends on the algorithm and I haven't read up on that yet. There are other stuff I haven't figured out yet (like the 4 1/4'' channel outputs) but I guess we need a manual for that.
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totes. we are just guessing about this stuff at this point. my guess on the 1/4" speaker outputs is that they are a balanced (hopefully!) copy of the 1/8" speaker outputs, like on the size matters module, to facilitate direct interfacing with a quad speaker system.Paranormal Patroler wrote: I'd guess they're tied to both the position and the room size. But that probably depends on the algorithm and I haven't read up on that yet. There are other stuff I haven't figured out yet (like the 4 1/4'' channel outputs) but I guess we need a manual for that.
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Yeah, sorry, I meant to write 1/8". The 1/4" are obviously there to output the signal to the console/speakers. So the 1/8" must be there to get the signal onto the reverbs/delays possibly? I don't see no send/return options otherwise.Noha wrote: totes. we are just guessing about this stuff at this point. my guess on the 1/4" speaker outputs is that they are a balanced (hopefully!) copy of the 1/8" speaker outputs, like on the size matters module, to facilitate direct interfacing with a quad speaker system.
edit
no, scratch that. Those must be mults of the 1/4" outs to root your signal to other modules. No returns. I wonder what the intended use of the filter outs are with no returns from the reverbs. I guess that you use the out of the 1/8" to get the sound on the reverb module and the +filter out to the reverb CV in. Whereas the -filter is there for the CV in of the cutoff filter.
So it all pertains to what the algorithm does exactly...
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As far as i understood the 1/4" jacks are not balanced! I think the difference between the 1/4" and 1/8" jacks will be the levels (line vs modular).
Not sure about the CV outs, but intuitively i would say they are correlated to the signal strength being routed to the 4 outs respectively.
On the filter outs, i can imagine several applications, but it depends highly on the actual patch.
For ex routing the outs into 2 vermona reverb units (to cover all channels) and then modulate the filter cut...
CHeers,
BJ
Not sure about the CV outs, but intuitively i would say they are correlated to the signal strength being routed to the 4 outs respectively.
On the filter outs, i can imagine several applications, but it depends highly on the actual patch.
For ex routing the outs into 2 vermona reverb units (to cover all channels) and then modulate the filter cut...
CHeers,
BJ
Gonzophone: 6U monosynth https://www.modulargrid.net/e/racks/view/156366